Flights from St. Louis to Mercedes

Photo by Barbara A Smith

Cheapest flights from St. Louis

These prices were available within the past 7 days. Prices quoted are per person, round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Tue, Feb 3 - Sat, Feb 14
STL
Lambert-St. Louis Intl.
SJO
Juan Santamaría Intl.
$360 Roundtrip, found 8 hours ago
$360
Roundtrip
found 8 hours ago
Select United flight, departing Tue, Feb 3 from Lambert-St. Louis Intl. to Juan Santamaría Intl., returning Sat, Feb 14, priced at $360 found 8 hours ago
United
Tue, Feb 3 - Sat, Feb 14
STL
Lambert-St. Louis Intl.
SJO
Juan Santamaría Intl.
$366 Roundtrip, found 8 hours ago
$366
Roundtrip
found 8 hours ago
Select United flight, departing Tue, Feb 3 from Lambert-St. Louis Intl. to Juan Santamaría Intl., returning Sat, Feb 14, priced at $366 found 8 hours ago
American Airlines
Tue, Feb 3 - Sat, Feb 14
STL
Lambert-St. Louis Intl.
SJO
Juan Santamaría Intl.
$372 Roundtrip, found 8 hours ago
$372
Roundtrip
found 8 hours ago
Select American Airlines flight, departing Tue, Feb 3 from Lambert-St. Louis Intl. to Juan Santamaría Intl., returning Sat, Feb 14, priced at $372 found 8 hours ago
United
Tue, Feb 3 - Sat, Feb 14
STL
Lambert-St. Louis Intl.
SJO
Juan Santamaría Intl.
$380 Roundtrip, found 8 hours ago
$380
Roundtrip
found 8 hours ago
Select United flight, departing Tue, Feb 3 from Lambert-St. Louis Intl. to Juan Santamaría Intl., returning Sat, Feb 14, priced at $380 found 8 hours ago
American Airlines
Tue, Feb 3 - Sat, Feb 14
STL
Lambert-St. Louis Intl.
SJO
Juan Santamaría Intl.
$386 Roundtrip, found 8 hours ago
$386
Roundtrip
found 8 hours ago
Select American Airlines flight, departing Tue, Feb 3 from Lambert-St. Louis Intl. to Juan Santamaría Intl., returning Sat, Feb 14, priced at $386 found 8 hours ago
United
Tue, Feb 3 - Sat, Feb 14
STL
Lambert-St. Louis Intl.
SJO
Juan Santamaría Intl.
$389 Roundtrip, found 8 hours ago
$389
Roundtrip
found 8 hours ago
Select United flight, departing Tue, Feb 3 from Lambert-St. Louis Intl. to Juan Santamaría Intl., returning Sat, Feb 14, priced at $389 found 8 hours ago
United
Tue, Feb 3 - Sat, Feb 14
STL
Lambert-St. Louis Intl.
SJO
Juan Santamaría Intl.
$395 Roundtrip, found 8 hours ago
$395
Roundtrip
found 8 hours ago
Select United flight, departing Tue, Feb 3 from Lambert-St. Louis Intl. to Juan Santamaría Intl., returning Sat, Feb 14, priced at $395 found 8 hours ago
American Airlines
Tue, Feb 3 - Sat, Feb 14
STL
Lambert-St. Louis Intl.
SJO
Juan Santamaría Intl.
$401 Roundtrip, found 8 hours ago
$401
Roundtrip
found 8 hours ago
Select American Airlines flight, departing Tue, Feb 3 from Lambert-St. Louis Intl. to Juan Santamaría Intl., returning Sat, Feb 14, priced at $401 found 8 hours ago
United
Tue, Feb 3 - Sat, Feb 14
STL
Lambert-St. Louis Intl.
SJO
Juan Santamaría Intl.
$409 Roundtrip, found 8 hours ago
$409
Roundtrip
found 8 hours ago
Select United flight, departing Tue, Feb 3 from Lambert-St. Louis Intl. to Juan Santamaría Intl., returning Sat, Feb 14, priced at $409 found 8 hours ago
United
Tue, Feb 3 - Sat, Feb 14
STL
Lambert-St. Louis Intl.
SJO
Juan Santamaría Intl.
$413 Roundtrip, found 8 hours ago
$413
Roundtrip
found 8 hours ago
Select United flight, departing Tue, Feb 3 from Lambert-St. Louis Intl. to Juan Santamaría Intl., returning Sat, Feb 14, priced at $413 found 8 hours ago
American Airlines
Tue, Feb 3 - Sat, Feb 14
STL
Lambert-St. Louis Intl.
SJO
Juan Santamaría Intl.
$415 Roundtrip, found 8 hours ago
$415
Roundtrip
found 8 hours ago
Select American Airlines flight, departing Tue, Feb 3 from Lambert-St. Louis Intl. to Juan Santamaría Intl., returning Sat, Feb 14, priced at $415 found 8 hours ago
United
Tue, Feb 3 - Sat, Feb 14
STL
Lambert-St. Louis Intl.
SJO
Juan Santamaría Intl.
$416 Roundtrip, found 8 hours ago
$416
Roundtrip
found 8 hours ago
Select United flight, departing Tue, Feb 3 from Lambert-St. Louis Intl. to Juan Santamaría Intl., returning Sat, Feb 14, priced at $416 found 8 hours ago
American Airlines
Tue, Feb 3 - Sat, Feb 14
STL
Lambert-St. Louis Intl.
SJO
Juan Santamaría Intl.
$424 Roundtrip, found 8 hours ago
$424
Roundtrip
found 8 hours ago
Select American Airlines flight, departing Tue, Feb 3 from Lambert-St. Louis Intl. to Juan Santamaría Intl., returning Sat, Feb 14, priced at $424 found 8 hours ago
United
Tue, Feb 3 - Sat, Feb 14
STL
Lambert-St. Louis Intl.
SJO
Juan Santamaría Intl.
$426 Roundtrip, found 8 hours ago
$426
Roundtrip
found 8 hours ago
Select United flight, departing Tue, Feb 3 from Lambert-St. Louis Intl. to Juan Santamaría Intl., returning Sat, Feb 14, priced at $426 found 8 hours ago
American Airlines
Tue, Feb 3 - Sat, Feb 14
STL
Lambert-St. Louis Intl.
SJO
Juan Santamaría Intl.
$430 Roundtrip, found 8 hours ago
$430
Roundtrip
found 8 hours ago
Select American Airlines flight, departing Tue, Feb 3 from Lambert-St. Louis Intl. to Juan Santamaría Intl., returning Sat, Feb 14, priced at $430 found 8 hours ago
American Airlines
Tue, Feb 3 - Sat, Feb 14
STL
Lambert-St. Louis Intl.
SJO
Juan Santamaría Intl.
$431 Roundtrip, found 8 hours ago
$431
Roundtrip
found 8 hours ago
Select American Airlines flight, departing Tue, Feb 3 from Lambert-St. Louis Intl. to Juan Santamaría Intl., returning Sat, Feb 14, priced at $431 found 8 hours ago
Delta
Tue, Feb 3 - Sat, Feb 14
STL
Lambert-St. Louis Intl.
SJO
Juan Santamaría Intl.
$493 Roundtrip, found 8 hours ago
$493
Roundtrip
found 8 hours ago
Select Delta flight, departing Tue, Feb 3 from Lambert-St. Louis Intl. to Juan Santamaría Intl., returning Sat, Feb 14, priced at $493 found 8 hours ago
American Airlines
Tue, Feb 3 - Sat, Feb 14
STL
Lambert-St. Louis Intl.
SJO
Juan Santamaría Intl.
$500 Roundtrip, found 8 hours ago
$500
Roundtrip
found 8 hours ago
Select American Airlines flight, departing Tue, Feb 3 from Lambert-St. Louis Intl. to Juan Santamaría Intl., returning Sat, Feb 14, priced at $500 found 8 hours ago
Air Canada
Tue, Feb 3 - Sat, Feb 14
STL
Lambert-St. Louis Intl.
SJO
Juan Santamaría Intl.
$1,634 Roundtrip, found 8 hours ago
$1,634
Roundtrip
found 8 hours ago
Select Air Canada flight, departing Tue, Feb 3 from Lambert-St. Louis Intl. to Juan Santamaría Intl., returning Sat, Feb 14, priced at $1,634 found 8 hours ago
Copa
Tue, Feb 3 - Sat, Feb 14
STL
Lambert-St. Louis Intl.
SJO
Juan Santamaría Intl.
$1,691 Roundtrip, found 8 hours ago
$1,691
Roundtrip
found 8 hours ago
Select Copa flight, departing Tue, Feb 3 from Lambert-St. Louis Intl. to Juan Santamaría Intl., returning Sat, Feb 14, priced at $1,691 found 8 hours ago